9172 Abhramu (1989 OB)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5528095681 ± 2.97e-08
Semi-major axis (a)2.7099939282 AU ± 2.82e-09
Inclination (i)7.84213734° ± 6.02e-06
Long. of Asc. Node (Ω)287.57299592° ± 2.78e-05
Arg. of Perihelion (ω)74.18679131° ± 2.87e-05
Mean Anomaly (M)46.77244969° ± 4.36e-06
Mean Motion (n)0.2209325979°/day ± 3.44e-10
Perihelion dist (q)1.21188336 AU ± 8.05e-08
Aphelion dist (Q)4.20810450 AU ± 8.06e-08
Orbital Period4.46120805 yr ± 6.95e-09
Physical Parameters
H (abs. magnitude)16.64
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.390″
Uncertainty0
Orbit TypeAmor
MOID0.250608 AU
Observations Used456
Oppositions29
Arc Total1989-2026
First Observation Used1989-07-07
Last Observation Used2026-02-07
Observations (477)
Date Type RA Dec Mag Band Observatory
1998-08-26 02:14:15 C 04 42 19.67 +33 23 13.8 557
1998-08-26 02:17:36 C 04 42 20.18 +33 23 15.4 557
1998-11-24 03:14:04 C 07 06 59.85 +30 34 16.3 118
1998-11-24 03:19:16 C 07 06 59.60 +30 34 15.5 118
1998-11-24 03:22:03 C 07 06 59.48 +30 34 15.0 118
1998-11-25 01:30:30 C 07 06 01.03 +30 30 45.5 a 561
1998-11-25 01:32:59 C 07 06 00.88 +30 30 45.0 a 561
1998-11-25 01:35:30 C 07 06 00.77 +30 30 44.7 a 561
1998-12-14 11:03:32 C 06 37 58.76 +29 00 09.7 18.4 a 704
1998-12-14 11:35:07 C 06 37 56.36 +29 00 00.1 19.1 a 704
1998-12-14 12:06:33 C 06 37 54.30 +28 59 53.7 18.9 a 704
1998-12-14 12:37:58 C 06 37 51.89 +28 59 45.1 19.2 a 704
1998-12-17 07:26:21 C 06 33 16.39 +28 43 38.1 19.2 a 704
1998-12-17 07:59:44 C 06 33 14.07 +28 43 30.3 18.5 a 704
1998-12-17 08:33:08 C 06 33 11.51 +28 43 21.7 18.9 a 704
1998-12-17 09:06:20 C 06 33 09.24 +28 43 13.1 18.7 a 704
1998-12-17 09:39:30 C 06 33 06.88 +28 43 05.1 17.8 a 704
1998-12-23 21:59:02 C 06 22 35.17 +28 02 31.8 z 610
1998-12-23 22:17:02 C 06 22 33.96 +28 02 26.9 z 610
1998-12-23 22:34:06 C 06 22 32.81 +28 02 22.3 z 610
1998-12-23 22:49:41 C 06 22 31.76 +28 02 18.0 z 610
1998-12-23 23:04:42 C 06 22 30.75 +28 02 13.9 z 610
1999-01-23 06:14:30 C 05 51 27.25 +24 54 27.3 z 711
1999-01-23 06:33:29 C 05 51 26.89 +24 54 22.8 z 711
1999-02-22 03:17:50 C 05 55 56.28 +23 02 39.1 z 711
1999-02-22 03:37:40 C 05 55 56.73 +23 02 36.5 z 711
2002-07-16 03:13:48 C 15 09 01.35 -24 18 30.6 711
2002-07-16 03:32:24 C 15 09 01.27 -24 18 27.6 711
2002-07-16 03:51:02 C 15 09 01.18 -24 18 23.5 711
2007-06-21 11:10:51 C 02 07 52.99 +19 04 50.5 o 696
2007-06-21 11:12:07 C 02 07 53.19 +19 04 51.4 o 696
2007-10-15 10:26:57 C 07 56 34.40 +25 07 47.1 19.9 c 704
2007-10-15 10:43:20 C 07 56 35.45 +25 07 42.3 20.1 c 704
2007-10-15 10:59:37 C 07 56 36.34 +25 07 38.2 19.5 c 704
2007-10-15 11:16:00 C 07 56 37.17 +25 07 34.9 19.7 c 704
2007-11-07 08:34:18 C 08 18 27.97 +23 02 34.1 r G96
2007-11-07 08:42:19 C 08 18 28.15 +23 02 32.6 r G96
2007-11-07 08:50:22 C 08 18 28.33 +23 02 31.2 r G96
2007-11-07 08:58:31 C 08 18 28.47 +23 02 29.6 r G96
2007-11-12 09:49:15 C 08 20 25.83 +22 41 01.5 r G96
2007-11-12 09:58:54 C 08 20 25.90 +22 41 00.2 r G96
2007-11-12 10:08:50 C 08 20 26.01 +22 40 58.6 r G96
2007-11-12 10:18:35 C 08 20 26.12 +22 40 56.9 r G96
2007-12-06 08:24:19 C 08 14 25.34 +21 36 50.0 19.4 c 704
2007-12-06 08:42:44 C 08 14 24.75 +21 36 48.6 19.6 c 704
2007-12-06 09:01:17 C 08 14 24.16 +21 36 47.6 19.8 c 704
2007-12-06 09:19:42 C 08 14 23.48 +21 36 46.7 19.7 c 704
2007-12-06 09:38:08 C 08 14 22.84 +21 36 45.4 19.8 c 704
2007-12-06 09:56:01 C 08 14 22.23 +21 36 44.6 r G96
2007-12-06 10:05:37 C 08 14 21.91 +21 36 43.7 r G96